<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>淘宝焦点图案例</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }
        li{
            list-style: none;
        }
        
        .tb-promo {
            position: relative;
            width: 520px;
            height: 280px;
            background-color: #f5f5f5;
            margin: 100px auto;
        }
        
        .tb-promo img {
            width: 520px;
            height: 280px;
        }
        /* 并集选择器 */
        
        .prev,
        .next {
            position: absolute;
            top: 50%;
            margin-top: -15px;
            width: 20px;
            height: 30px;
            background-color: rgba(0, 0, 0, .3);
            text-align: center;
            line-height: 30px;
            text-decoration: none;
            color: #fff;
        }
        
        .prev {
            left: 0;
            border-top-right-radius: 15px;
            border-bottom-right-radius: 15px;
        }
        
        .next {
            right: 0;
            border-top-left-radius: 15px;
            border-bottom-left-radius: 15px;
        }
    .promo-nav{
        position: absolute;
        bottom: 15px;
        left: 50%;
        margin-left: -35px;
        width: 70px;
        height: 14px;
        background-color: rgb(255, 255, 255);
        border-radius: 7px;
    }
    .promo-nav li{
        float: left;
        width: 8px;
        height: 8px;
        /* color: sandybrown; */
        background-color: #f5f5f5 ;
        border-radius: 50%;
        margin: 3px;
    }
    .promo-nav .selected{
        background-color: #ff5500;
    }
    </style>
</head>

<body>
    <div class="tb-promo">
        <img src="" alt="">
        <a href="#" class="prev">&lt;</a>
        <a href="#" class="next">&gt;</a>
        <ul class="promo-nav">
            <li class="selected"></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
        </ul>
    </div>
</body>

</html>